Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/utilities/vmError.hpp@c96030fff130 (annotated)
src/share/vm/utilities/vmError.hpp
Thu, 20 Nov 2008 16:56:09 -0800
- author
- ysr
- date
- Thu, 20 Nov 2008 16:56:09 -0800
- changeset 888
- c96030fff130
- parent 435
- a61af66fc99e
- child 948
- 2328d1d3f8cf
- permissions
- -rw-r--r--
6684579: SoftReference processing can be made more efficient
Summary: For current soft-ref clearing policies, we can decide at marking time if a soft-reference will definitely not be cleared, postponing the decision of whether it will definitely be cleared to the final reference processing phase. This can be especially beneficial in the case of concurrent collectors where the marking is usually concurrent but reference processing is usually not.
Reviewed-by: jmasa
| duke@435 | 1 | /* |
| duke@435 | 2 | * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved. |
| duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| duke@435 | 4 | * |
| duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
| duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| duke@435 | 7 | * published by the Free Software Foundation. |
| duke@435 | 8 | * |
| duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| duke@435 | 13 | * accompanied this code). |
| duke@435 | 14 | * |
| duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
| duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| duke@435 | 18 | * |
| duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| duke@435 | 21 | * have any questions. |
| duke@435 | 22 | * |
| duke@435 | 23 | */ |
| duke@435 | 24 | |
| duke@435 | 25 | |
| duke@435 | 26 | class VM_ReportJavaOutOfMemory; |
| duke@435 | 27 | |
| duke@435 | 28 | class VMError : public StackObj { |
| duke@435 | 29 | friend class VM_ReportJavaOutOfMemory; |
| duke@435 | 30 | |
| duke@435 | 31 | enum ErrorType { |
| duke@435 | 32 | internal_error = 0xe0000000, |
| duke@435 | 33 | oom_error = 0xe0000001 |
| duke@435 | 34 | }; |
| duke@435 | 35 | int _id; // Solaris/Linux signals: 0 - SIGRTMAX |
| duke@435 | 36 | // Windows exceptions: 0xCxxxxxxx system errors |
| duke@435 | 37 | // 0x8xxxxxxx system warnings |
| duke@435 | 38 | |
| duke@435 | 39 | const char * _message; |
| duke@435 | 40 | |
| duke@435 | 41 | Thread * _thread; // NULL if it's native thread |
| duke@435 | 42 | |
| duke@435 | 43 | |
| duke@435 | 44 | // additional info for crashes |
| duke@435 | 45 | address _pc; // faulting PC |
| duke@435 | 46 | void * _siginfo; // ExceptionRecord on Windows, |
| duke@435 | 47 | // siginfo_t on Solaris/Linux |
| duke@435 | 48 | void * _context; // ContextRecord on Windows, |
| duke@435 | 49 | // ucontext_t on Solaris/Linux |
| duke@435 | 50 | |
| duke@435 | 51 | // additional info for VM internal errors |
| duke@435 | 52 | const char * _filename; |
| duke@435 | 53 | int _lineno; |
| duke@435 | 54 | |
| duke@435 | 55 | // used by fatal error handler |
| duke@435 | 56 | int _current_step; |
| duke@435 | 57 | const char * _current_step_info; |
| duke@435 | 58 | int _verbose; |
| duke@435 | 59 | |
| duke@435 | 60 | // used by reporting about OOM |
| duke@435 | 61 | size_t _size; |
| duke@435 | 62 | |
| duke@435 | 63 | // set signal handlers on Solaris/Linux or the default exception filter |
| duke@435 | 64 | // on Windows, to handle recursive crashes. |
| duke@435 | 65 | void reset_signal_handlers(); |
| duke@435 | 66 | |
| duke@435 | 67 | // handle -XX:+ShowMessageBoxOnError. buf is used to format the message string |
| duke@435 | 68 | void show_message_box(char* buf, int buflen); |
| duke@435 | 69 | |
| duke@435 | 70 | // generate an error report |
| duke@435 | 71 | void report(outputStream* st); |
| duke@435 | 72 | |
| duke@435 | 73 | // accessor |
| duke@435 | 74 | const char* message() { return _message; } |
| duke@435 | 75 | |
| duke@435 | 76 | public: |
| duke@435 | 77 | // Constructor for crashes |
| duke@435 | 78 | VMError(Thread* thread, int sig, address pc, void* siginfo, void* context); |
| duke@435 | 79 | // Constructor for VM internal errors |
| duke@435 | 80 | VMError(Thread* thread, const char* message, const char* filename, int lineno); |
| duke@435 | 81 | |
| duke@435 | 82 | // Constructors for VM OOM errors |
| duke@435 | 83 | VMError(Thread* thread, size_t size, const char* message, const char* filename, int lineno); |
| duke@435 | 84 | // Constructor for non-fatal errors |
| duke@435 | 85 | VMError(const char* message); |
| duke@435 | 86 | |
| duke@435 | 87 | // return a string to describe the error |
| duke@435 | 88 | char *error_string(char* buf, int buflen); |
| duke@435 | 89 | |
| duke@435 | 90 | // main error reporting function |
| duke@435 | 91 | void report_and_die(); |
| duke@435 | 92 | |
| duke@435 | 93 | // reporting OutOfMemoryError |
| duke@435 | 94 | void report_java_out_of_memory(); |
| duke@435 | 95 | |
| duke@435 | 96 | // returns original flags for signal, if it was resetted, or -1 if |
| duke@435 | 97 | // signal was not changed by error reporter |
| duke@435 | 98 | static int get_resetted_sigflags(int sig); |
| duke@435 | 99 | |
| duke@435 | 100 | // returns original handler for signal, if it was resetted, or NULL if |
| duke@435 | 101 | // signal was not changed by error reporter |
| duke@435 | 102 | static address get_resetted_sighandler(int sig); |
| duke@435 | 103 | }; |
